Building element



May 29, 1923.

J. MEL'LE-s BUILDING ELEMENT Filed y 17. 1922 Patented May 29, 1923.

UNITED sr JAKOB MELLES, or BRIEG, GERMANY.

BUILDING ELEMENT.

Application filed May 17,

To all whom it may concern:

Be it known that I, JAKoB MnLLns, a citizen of the German Republic, residing at Brieg, Germany, have invented certain new and useful Improvements in Building Flements (for which I have'filed applications for patents in Germany Nos. M. 71,563 V/37 and M. 76,765 V/37 on November 20, 1920, and February 10, 1922), of which the following is a specification.

This invention relates to an element to be used in building constructions specially designed to be used embedded in concrete for the construction of solid ceilings with wooden floor or cement floor, or, without such embedding as filling, for instance for the construction of walls, stair steps and the like. The building element can be further used in the construction of trusses for rooms, sheds or the like. p

The building element consists of a wooden beam as top boom member, of a trellis work plate composed of parallel longitudinal wires and transverse wires connected with one another, .as bottom boom member, andof a similar trellis work plate as intermediate boom member. This intermediate trellis work plate is preferably made of a number of parallel longitudinal wires which are bent in zig-zag and of straight cross wires, the upper apexes of saidlongitudinal wires being joined to the upper wood beam and the lower apexes of said longitudinal wires being connected with the lower trellis work plate.

The invention consists 'inthe special form of execution of the joint between the apexes of the intermediate trellis work plate and the wood beam. It has for its object to make this joint strong and capable of resistance, being however nevertheless easy to produce and to disconnect. y Y

According to the invention on the lower surface of the upper wood beam as many parallel rows of partitions are arranged as the intermediate trellis work plate has apexes. These rows of partitions are ar-: ranged over the entire length of the lower surface of the wood beam at uniformdistances apart said distances corresponding with the distances between the apexes of the intermediate plate.

Each row of partitions is formed by slits which stand at the same distances apart as f the apexes of the several longitudinal wires of which said intermediate member is composed so that each slit serves to aecommo- 1922. Serial No. 561,767.

date one apex of the longitudinal wires which the one parallel to the other serve to form the intermediate member. Cross pins inserted into the bent wires of the intermediate trellis work plate directly under the apexes and supported each, by the corresponding row of partitions ensures the connection.

The partitions may be arranged either directly in the wood beam or they can be formed by separate auxiliary pieces fixedat convenient distances apart upon the lower surface of this wood beam. In thefirst case slits of the approximate outer shape-of a trilateral prism may beiprovided in the lower part of the wood beam extending upward from the lower surface ofthis beam.

of the longitudinal pieces of the intermediate trellis work plate. The partitions These slits are designed to receive the apexes formed between these slits have alined bores nal wires of the intermediate trellis work plate. The partitions are formed in this case by the solid parts of the plate between the slits so that the cross pins could be inserted between the apexes of the longitudinal wires and the partitions. The first mentioned form of construction is preferably designed for building elements for ceilings with, wood floors, the second mentioned form of construction being designed for building elements for heavily loaded ceilings and for ceilings with concrete floor.

Fig. 1 of the drawings shows diagrammatically the building element in a longitudinal section on, line A A of F 2.

Fig. 2 is a cross section on line B B of Fig. 1.

Fig. 3 shows on a larger scale a longitudis nal section on line C-C of Fig. 4 representing a form of construction of the connection of the upper apexes of the intermediate trellis workplate with the upper wood beam. g

-- Fig. 4 is a. cross section on line DD of Fig. 3.

Fig. '5 shows at the hand side anen larged longitudinal section online E-E and at the right hand side a similar section on line F--F of Fig. 6 representing the other form of construction of the connection of the upper apexes of the intermediate trellis work plate and of the upper wood beam.

Fig. 6 is a cross section on line Gr-G of Fig. 5.

I is the wood beam whichforms the upper member, II the plane trellis work plate forming the lower member which consists of interconnected longitudinal wires 1 and cross wires 2, III the trellis work plate forming the intermediary member and consisting of interconnected longitudinal wires 3 and cross wires 1. The longitudinal wires 3 of the thin intermediate member are bent in zig zag, the upper apexes 5 are connected with the wood beam I and the lower apexes 6 with the lower trellis work plate II.

, According to the form of construction shown on Figs. 3 and 4 the connection of the 'apexes 5 of the longitudinal wires 3 of the trellis work plate III and of the wood beam I is executedin the following manner.

The wood beam I has in its lower part slits 8 which extend upward from the lower surface 7 of the beam and correspond approximat ely to the outer shape of a trilateral prism, said slits 8 being arranged in rows over the entire length of the beam. The slits of one row are arranged the one behind the other and separated by partitions 9 (Fig. 4:) the thickness of which corresponds with the distance between the apexes 5 of one transverse row of apexes of the parallel longitudinal wires 3 of the trellis work plate III. These slits '8 serve to receive the apeXes 5 of the longitudinal wires. The partitions 9 have transversebores 10 (Fig. 1-) which are alined so that after the ape-Xes 5 have been inserted into the slits 8 cross bars 11 can be inserted through the bores 10 so that it engages under the apeXes 5 and being supported by the partitions 9 ensures the coin nection between the trellis work plate III and the wood beam I. The pointed ends of the cross pins 11 are bent upward and driven into the wood of beam I. This form of construction of the connection of the apexes 5 of the intermediate member III with the wood beam I serve, specially ..for building elements, designed for the construction of ceilings with wood floor which can be nailed directly upon the wood beam I.

-According to the form of construction shown in F1gsf5 'anae'metai plates 12 are fix d by screws updn he rower surface 7 of the wood beam I-at distancesapa'rt which correspond to the distances between the rows of upper apefies 5 of the parallel longitudinal wires 3 of the intermediate nearer III. These plates serve for the connection of the upper apexes 5 of the longitudinal wires 3 of the trellis work plate III, to the wood beam I. The middle part 13 of the metal plate 12 is bulged downward and has slits 141 (Fig. 6) which are separated the one from the other by partitions 15. The apeXes 5 are inserted into the slits 14: of the bulged part of plate 12 whereupon a cross pin 11 is inserted in the bulged down part of each plate so that it engages between the apexes 5 of the longitudinal wires and the partitions 15. The pointed ends of said rods are bent upwards and driven into the wood of the beam I.

This form of construction of the connection of the apexes 5 of the intermediate member with the wood beam I serve, specially for building elementsforthe construction of heavily loaded ceilings or of ceilings with concrete floor. The building element is filled with concrete up to the lower surface of the wood beam, the connections between the wood beams and the apexes 5 being left free. After the concrete has hardened the cross pins 11 are removed, whereupon, after the slits have been filled in, the wood beam I is removed and the cement floor put in place. i a

I claim q 1. A building element comprising a lower member consisting of a plane trellis work plate formed of longitudinal and cross wires, an intermediate member consisting of a trellis work "plate formed of several parallel longitudinal wires bent zig zag and of several straight cross wires, an upper member consisting of a wood beam, parallel transverse rows of vertical partitions on the lower surface of said upper member. spaced in accordance with the parallel rows of upper apexes of said longitudinal wires of the intermediate member slits being formed between the partitions of reachrow at distances which cor-respond with the distances between the apexes of one row of "upper apeXes of the parallel longitudinal wires of said intermediate member, said apexes being inserted into said slits, and transverse pins inserted below the apexes of the bent longitudinal wires of the intermediate member and supported by said partitions.

2. A building element comprising a lower member consisting of a plane trellis work plate formed of longitudinal and cross wires, an intermediate member consisting of a trellis work plate formed o f'several parallel longitudinal wires bent "zig 'zag and of seve'ral straight cross wires, an upper member consisting of a'wood beam, parallel trans.

verse rows of vertical partitions in the lewer surface oi said up er member formed .by

slits extending upward from the lower Slur-- fa'ce into said beam said partitions having "each a e transverse bore and said "slits being designed to receive each ens of the 'apex s of a row of upper apexes of the bent longitudinal wires of said intermediate member, and transverse pins one inserted through the bores of one row of partitions so that it engages under the apexes of the longitudinal wires to securely connect said intermediate member with said upper memher.

3. A building element comprising a lower member consisting of a plane trellis work plate formed of longitudinal and cross wires. an intermediate member consisting of a trellis work plate formed of several parallel longitudinal wires bent zig zag and of several straight cross wires, an upper member consisting of a wood beam, metal plates bulged downwardly at the middle in longitudinal direction fixed upon the lower sur face of said upper member at distances apart which correspond with the distances between the rows of upper apexes of the longitudinal wires of the intermediate member, partitions formed in vsaid bulged part of said plates by means of spaced slits, said slits be-' ing designed to receive the apexes of one In testimony whereof I afiix mysignav ture in presence oftwo witnesses.

J AKOB MELLES.

Witnesses: 1 I

FRANZ A. KALTZ, OSCAR F. BRONN. 

